Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1c9cb707520da763534bf14f84f0afff96cccb4b3e7870c25c0b9a57403937c' 
  AND token = 'jwWxkycW6terLC5q+/O86Gu//lEbV+yv10F/IBFQqns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00077

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}